Villanueva, M. A. (1999). Erap launches Concord for Charter change initiative. Philippine Star.
芝加哥风格引文Villanueva, Marichu A. "Erap Launches Concord for Charter Change Initiative." Philippine Star 1999.
MLA引文Villanueva, Marichu A. "Erap Launches Concord for Charter Change Initiative." Philippine Star, 1999.
警告：这些引文格式不一定是100％准确.